River Boat

  • Thread starter tregeat
  • Start date
  • #1
4
0

Homework Statement


A river flows toward 90 degrees. A river boat pilot heads the boat at 297 degrees and is able to go straight across the river at 6 m/s.


Homework Equations


What is the velocity of the current?
What is the velocity of the boat?


The Attempt at a Solution


I drew a free bodied diagram but i dont know what to put where.
 

Answers and Replies

  • #2
346
0
now the first question you have to ask yourself is the angle between the the direction in which the boat is steered and the direction of the river flow.

once you have done this, the velocities can be easily found by sine rule in a non-right angled triangle.
 
  • #3
4
0
k thanks.
 
  • #4
4
0
wait so i found the angle between the current and the boat but what are the other two angles?
 
  • #5
learningphysics
Homework Helper
4,099
5
wait so i found the angle between the current and the boat but what are the other two angles?
It's actually a right triangle... the hypoteneuse is the velocity of the boat... the two legs of the right triangle are the river velocity and the net velocity of 6m/s to the right.
 
  • #6
4
0
thanks
 
  • #7
346
0
It's actually a right triangle... the hypoteneuse is the velocity of the boat... the two legs of the right triangle are the river velocity and the net velocity of 6m/s to the right.
oh yeh its a right angled tiangle, how could i have missed that haha i guess i was feeling too sleepy
 

Related Threads on River Boat

  • Last Post
Replies
3
Views
3K
  • Last Post
Replies
5
Views
1K
  • Last Post
Replies
1
Views
4K
  • Last Post
Replies
3
Views
15K
  • Last Post
Replies
6
Views
1K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
0
Views
7K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
12
Views
3K
  • Last Post
Replies
3
Views
2K
Top